MIL-R™ F1 Reticle
The floating center reticle is 1.0 Mil in diameter, and features 0.2 and 0.1 Mil-radian graduations along the reticle. This reticle has only center illumination and a scale of 15 Mil-radians below the center.
Scope Estimation
The Nightforce MIL-R™ reticle can provide you with an accurate distance to your target, when the target size is known, using one of the following Mil ratio formulas:
Target Size in Inches ÷ Image Size Measured in Mils on the Reticle x 27.77 = Distance in Yards
Target Size in Inches ÷ Image Size Measured in Mils on the Reticle x 25.4 = Distance in Meters
Target size in centimeters ÷ Image size measured in millimeters on the reticle x 10.93 = Distance in yards
Target size in centimeters ÷ Image size measured in millimeters on the reticle x 10 = Distance in meters
For example, a standard stop sign measures 30" tall x 30" wide. By knowing the size of the target, in this case a stop sign, and applying the correct formula above, you will be able to accurately calculate the distance to your target.
Known target size = 30
Image size = 2.5 Mils. To measure the target image size in Mils, refer to the reticle diagram above.
Divide target size (30") by crosshair image size (2.5) = 12
For distance in yards, multiply 12 x 27.77 (constant) = 333.24 yards to the target.
For the distance in meters, multiply 12 x 25.4 (constant) = 304.8 meters to the target.
Your ability to accurately measure your target on your reticle requires some practice to become proficient.